Large-size flange ball valve ball transporting lever hole tooling

Abstract

This utility model relates to the field of tooling technology, specifically a tooling for machining the ball stem hole of a large-size flange ball valve. It includes a tooling base with a bearing concave surface on its top surface. A support block is fixedly connected to the top of the tooling base, and a positioning groove is formed on the top surface of the support block. The top surface of the tooling base also has an avoidance concave surface. A positioning hole is formed at the top of the tooling base. A left limiting plate is rotatably connected to the top surface of the support block, and a right limiting plate is rotatably connected to the top of the support block. The left and right limiting plates are the same size and symmetrically arranged. A left arc-shaped groove is formed on the inner side of the left limiting plate, and a right arc-shaped groove is formed on the inner side of the right limiting plate. The purpose of this utility model is to solve the problem of poor batch consistency when using existing ball stem hole machining tooling in the machining of large-size flange ball valves for mass production.

Description

Technical Field

[0001] This utility model relates to the field of tooling technology, specifically a tooling for the ball stem hole of a large-size flange ball valve vehicle. Background Technology

[0002] The large-size flange ball valve stem hole tooling is essentially a specialized auxiliary tool designed for machining the stem hole of large-size flange ball valves. Its core function is to solve the problems of difficult positioning, low accuracy, and poor efficiency when machining large-size workpieces. Large-size usually refers to flanges with a nominal diameter ≥300mm or valve body weight exceeding 50kg, which exceeds the range of conventional manual positioning. The flange ball valve has flanges at both ends of the valve body (for bolt connection to the pipeline), and the fluid flow is controlled by the rotation of the ball. The stem hole is a key hole on the ball for installing the valve stem, which directly affects the valve's opening and closing flexibility and sealing performance. Through the customized auxiliary tooling for specific machining processes, it provides a basis for turning machining.

[0003] In the machining of large-size flange ball valves, the existing ball stem hole tooling has problems such as unstable clamping status of each workpiece, difficulty in unifying positioning references, and poor consistency of clamping batches when facing the needs of mass production. This leads to increased difficulty in controlling the accuracy of subsequent machining processes. Utility Model Content

[0004] The purpose of this utility model is to provide a tooling for machining the ball stem hole of a large-size flange ball valve, so as to solve the problem of poor batch consistency when using existing tooling for machining the ball stem hole in the machining of large-size flange ball valves in the context of mass production.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tooling for the ball stem hole of a large-size flange ball valve includes a tooling base, the top surface of which has a bearing concave surface, a support block fixedly connected to the top of the tooling base, a positioning groove on the top surface of the support block, an avoidance concave surface on the top surface of the tooling base, and a positioning hole on the top of the tooling base.

[0007] Preferably, a left limiting plate is rotatably connected to the top surface of the support block, and a right limiting plate is rotatably connected to the top of the support block. The left and right limiting plates are the same size and are arranged symmetrically.

[0008] Preferably, the inner side of the left limiting plate is provided with a left arc-shaped groove, and the inner side of the right limiting plate is provided with a right arc-shaped groove. The right arc-shaped groove, the positioning groove, and the left arc-shaped groove cooperate to form a fixing hole that matches the ball cue hole.

[0009] Preferably, the top of the left limiting plate and the right limiting plate are provided with connecting pins, which are used to connect and fix the left limiting plate and the right limiting plate.

[0010] Preferably, the top of both the left limiting plate and the right limiting plate are provided with mating grooves, and the two mating grooves are respectively for the two ends of the connecting pin to be inserted.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The bearing concave surface of the tooling base can directly fit with the flange ball valve body, providing large-area support. The positioning groove on the top surface of the tooling support block can accurately align with the ball rod hole to be processed, ensuring the accurate relative position of the processing part and the lathe tool, reducing hole offset. The positioning hole of the tooling base can fix the position of the entire tooling on the lathe, ensuring consistency during batch processing.

[0013] 2. The recessed surface of the tooling base is specially designed to avoid the reinforced protrusion at the connection between the ball valve body and the ball rod hole. It can accurately avoid the protrusion during clamping, prevent workpiece or tooling damage caused by structural interference, ensure smooth clamping process, and indirectly improve processing efficiency and product qualification rate.

[0014] 3. The positioning groove of the support block is responsible for bottom positioning, the left arc groove of the left limiting plate and the right arc groove of the right limiting plate are responsible for top and side positioning. The three work together to form a fixing hole that matches the ball club hole, realizing full circumferential limiting of the ball club hole. Full circumferential limiting can firmly constrain the radial displacement of the ball club hole. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the docking groove of this utility model;

[0017] Figure 3 This is a schematic diagram of the connecting pin structure of this utility model.

[0018] In the diagram: 1. Tooling base; 2. Bearing concave surface; 3. Avoidance concave surface; 4. Right arc groove; 5. Support block; 6. Positioning groove; 7. Positioning hole; 8. Left limiting plate; 9. Connecting pin; 10. Right limiting plate; 11. Left arc groove; 12. Docking groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1 to 3 This utility model provides a technical solution.

[0021] A tooling for the ball rod hole of a large-size flange ball valve includes a tooling base 1. The top surface of the tooling base 1 is provided with a bearing concave surface 2 for directly placing the large-size flange ball valve body, which serves as the core bearing structure of the tooling. A support block 5 is fixedly connected to the top of the tooling base 1. The top surface of the support block 5 is provided with a positioning groove 6 for accurately positioning the ball rod hole, i.e., the part to be processed. The top surface of the tooling base 1 is also provided with an avoidance concave surface 3, which is designed to avoid the reinforcing protrusion at the connection between the ball valve body and the ball rod hole when the ball rod hole is engaged with the positioning groove 6, thus preventing structural interference. The top of the tooling base 1 is provided with a positioning hole 7 for fixing and positioning the entire tooling when it is installed on a lathe.

[0022] The top surface of the support block 5 is rotatably connected to a left limiting plate 8, and the top of the support block 5 is rotatably connected to a right limiting plate 10. The left limiting plate 8 and the right limiting plate 10 are the same size and are arranged symmetrically. They are both used to limit the top of the ball cue hole. The top of the left limiting plate 8 and the right limiting plate 10 are provided with connecting pins 9, which are used to connect and fix the left limiting plate 8 and the right limiting plate 10.

[0023] The inner side of the left limiting plate 8 is provided with a left arc-shaped groove 11, and the inner side of the right limiting plate 10 is provided with a right arc-shaped groove 4. The right arc-shaped groove 4, the positioning groove 6, and the left arc-shaped groove 11 work together to form a fixing hole that fits the cue hole. First, the cue hole is inserted into the positioning groove 6 of the support block 5, and then the left limiting plate 8 and the right limiting plate 10 are rotated respectively to make them snap onto the top of the cue hole. At this time, the left arc-shaped groove 11 and the right arc-shaped groove 4 fit perfectly against the outer wall of the cue hole, and together with the positioning groove 6 at the bottom, they achieve full circumferential limiting of the cue hole.

[0024] Both the left limiting plate 8 and the right limiting plate 10 have mating grooves 12 on their tops. The two mating grooves 12 are respectively for the two ends of the connecting pin 9 to be inserted. When the left limiting plate 8 and the right limiting plate 10 are engaged, the two ends of the connecting pin 9 are respectively inserted into the two mating grooves 12, which can complete the mutual fixation between the left limiting plate 8 and the right limiting plate 10 and ensure stable positioning.

[0025] The specific steps of this solution are as follows: Take out the ball rod hole tooling of the large-size flange ball valve, align the tooling base 1 with the mounting table of the lathe, and align the positioning hole 7 at the top of the tooling base 1 with the reserved mounting protrusion on the lathe table; select the corresponding fasteners of the lathe to firmly fix the tooling on the lathe, ensuring that the tooling is not loose or offset.

[0026] Move the large-size flange ball valve body and place it stably on the bearing concave surface 2 on the top surface of the tooling base 1; adjust the position of the ball valve body so that the reinforcing protrusion at the connection between the ball valve body and the ball rod hole is aligned with the clearance concave surface 3 on the top surface of the tooling base 1, ensuring that the reinforcing protrusion is completely within the range of the clearance concave surface 3, avoiding structural interference with the tooling base 1, and ensuring that the ball valve body is placed stably.

[0027] Observe and adjust the posture of the ball valve body, align the ball rod hole to be processed with the positioning groove 6 on the top surface of the support block 5; slowly move the ball valve body so that the ball rod hole is inserted into the positioning groove 6 of the support block 5, and achieve precise preliminary positioning of the ball rod hole through the positioning groove 6, ensuring that the area of ​​the ball rod hole to be processed is completely fitted with the positioning groove 6.

[0028] Hold the outer sides of the left limiting plate 8 and the right limiting plate 10 respectively. Since both are rotatably connected to the top of the support block 5, slowly rotate the left limiting plate 8 and the right limiting plate 10 upwards; so that the two are symmetrically engaged at the top of the cue hole. During the process, observe the left arc groove 11 on the inner side of the left limiting plate 8 and the right arc groove 4 on the inner side of the right limiting plate 10, and ensure that the left arc groove 11 and the right arc groove 4 gradually fit into the outer wall of the cue hole; when the two limiting plates are fully engaged, the left arc groove 11 and the right arc groove 4 together with the positioning groove 6 at the bottom form a fixing hole that fits the cue hole, realizing the full-circumference wrapping limitation of the cue hole.

[0029] Remove the connecting pin 9 from the connecting assembly, observe the mating grooves 12 at the top of the left limiting plate 8 and the right limiting plate 10, and confirm that the two mating grooves 12 are on the same horizontal line after being fastened; hold the connecting pin 9 and insert its two ends into the mating grooves 12 at the top of the left limiting plate 8 and the right limiting plate 10 respectively, ensuring that the connecting pin 9 is fully inserted into the two mating grooves 12, completing the mutual connection and fixation of the two limiting plates, and further ensuring the stable positioning of the cue hole.

[0030] Gently push the ball valve body and tooling components by hand to check whether the tooling is securely fixed to the lathe and the ball valve body to the tooling, whether the ball rod hole is misaligned or loose, and whether the limit plate fits tightly. After confirming that there are no abnormalities, start the lathe and machine the ball rod hole. After machining, first turn off the lathe, pull out the connecting pin 9, rotate the limit plate in the opposite direction to disengage it from the ball rod hole, then remove the ball valve body from the bearing concave surface 2, and finally remove the fasteners on the lathe attached to the tooling base 1, and remove the tooling from the lathe to complete the entire operation process.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooling for the ball stem hole of a large-size flange ball valve, comprising a tooling base (1), characterized in that: The tooling base (1) has a bearing concave surface (2) on its top surface. A support block (5) is fixedly connected to the top of the tooling base (1). A positioning groove (6) is opened on the top surface of the support block (5). An avoidance concave surface (3) is also provided on the top surface of the tooling base (1). A positioning hole (7) is opened on the top of the tooling base (1).

2. The tooling for the ball stem hole of a large-size flange ball valve as described in claim 1, characterized in that, The top surface of the support block (5) is rotatably connected to a left limiting plate (8), and the top of the support block (5) is rotatably connected to a right limiting plate (10). The left limiting plate (8) and the right limiting plate (10) are the same size and are arranged symmetrically.

3. The tooling for the ball stem hole of a large-size flange ball valve as described in claim 2, characterized in that, The left limiting plate (8) has a left arc-shaped groove (11) on its inner side, and the right limiting plate (10) has a right arc-shaped groove (4) on its inner side. The right arc-shaped groove (4), the positioning groove (6), and the left arc-shaped groove (11) work together to form a fixing hole that is compatible with the ball club hole.

4. The tooling for the ball stem hole of a large-size flange ball valve according to claim 2, characterized in that, The top of the left limiting plate (8) and the right limiting plate (10) are provided with connecting pins (9), which are used to connect and fix the left limiting plate (8) and the right limiting plate (10).

5. The tooling for the ball stem hole of a large-size flange ball valve according to claim 4, characterized in that, The top of both the left limiting plate (8) and the right limiting plate (10) are provided with docking grooves (12), and the two docking grooves (12) are respectively used for the two ends of the connecting pin (9) to be inserted.

Images